| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Total_real_memory |
The total real memory space on the host |
MB
|
|
| Available_real_memory |
The available real/physical memory space on the host |
MB
|
Ideally, this value should be high.
|
| Free_virtual_memory |
The available virtual memory on the host |
MB
|
|
| Total_swap |
The total swap size configured for the host |
MB
|
|
| Available_swap |
The available swap space on the host |
MB
|
An unusually low value for the available swap space can indicate a memory bottleneck. Check the memory utilization of individual processes to figure out the process(es) that has (have) maximum memory consumption and look to tune their memory usages and allocations accordingly. |
| Swap_error |
Whether adequate swap space is available or not |
Boolean
|
A value of 1 indicates that there is very little swap space left. A value of 0 indicates normalcy with respect to available swap space.
|
| Shared_memory |
The total shared memory on the host |
MB
|
|
| Buffered_memory |
The total buffered memory on the host |
MB
|
|
| Cached_memory |
The total cached memory on the host |
MB
|
|
| Swap_in |
The amount of memory swapped in from disk per second |
KB/Sec
|
|
| Swap_out |
The amount of memory swapped out to disk per second |
KB/Sec
|
|